EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-12-16 | GHOST RIDER NORTH SATELLITE AND GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-12-16 | HELIOS COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PEOPLES ELECTRIC COOP / TARGA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-12-16 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2024-12-16 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | CALPINE BETHLEHEM LLC/BETHLEHEM — high-priority violation on file | BETHLEHEM, Northampton, PA | Pass | State |
| 2024-12-16 | APOLLO RESOURCES LLC CLAWSON COMP STA/INDIANA — high-priority violation on file | BLAIRSVILLE, Indiana, PA | Pass | State |
| 2024-12-16 | DIVERSIFIED PROD MARCHAND COMP STA | INDIANA, Indiana, PA | Pass | State |
| 2024-12-16 | PA TURNPIKE COMM/AKH MAINT FAC | JEANNETTE, Westmoreland, PA | Pass | State |
| 2024-12-16 | WASATCH INTEGRATED WASTE MANAGEMENT | LAYTON, Davis, UT | Pass | State |
| 2024-12-16 | DOMINION ENERGY - VIRGINIA CITY HYBRID ENERGY CENTER | ST PAUL, Wise, VA | Pass | State |
| 2024-12-16 | WISCONSIN ELECTRIC POWER COMPANY, D/B/A | WATERTOWN, Jefferson, WI | N/A | State |
| 2024-12-16 | GUNDERSEN HEALTH SYSTEM | LA CROSSE, La Crosse, WI | Pass | State |
| 2024-12-15 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-15 | TAMPA ELECTRIC COMPANY (TEC) | GIBSONTON, Hillsborough, FL | Pass | State |
| 2024-12-15 | TAMPA ELECTRIC COMPANY (TEC) | GIBSONTON, Hillsborough, FL | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | KRAFT HEINZ FOODS COMPANY | JACKSONVILLE, Duval, FL | Pass | State |
| 2024-12-14 | PACKAGING CORPORATION OF AMERICA — high-priority violation on file | WALLULA, Walla Walla, WA | Pass | State |
| 2024-12-13 | FIRST SOLAR, INC | TRINITY, Morgan, AL | Pass | State |
| 2024-12-13 | R.E.C. TRANSPORT, INC. | RUSSELLVILLE, Pope, AR | Pass | State |
| 2024-12-13 | PINTO VALLEY MINE | MIAMI, Gila, AZ | Pass | State |
| 2024-12-13 | MONTEREY REGIONAL WASTE MGMT DIST | MARINA, Monterey, CA | Pass | Local |
| 2024-12-13 | VICTOR VALLEY WASTEWATER RECLAMATION AUTHORITY | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2024-12-13 | VICTOR VALLEY WASTEWATER RECLAMATION AUTHORITY | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2024-12-13 | AIR PROD & CHEM INC | CARSON, Los Angeles, CA | Pass | Local |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | MAQUOKETA MUNICIPAL ELECTRIC UTILITY-N&S | MAQUOKETA (HISTORICAL), Jackson, IA | Pass | State |
| 2024-12-13 | MAQUOKETA MUNICIPAL ELECTRIC UTILITY-N&S | MAQUOKETA (HISTORICAL), Jackson, IA | Pass | State |
| 2024-12-13 | AHLSTROM FILTRATION LLC | MADISONVILLE, Hopkins, KY | Pass | State |
| 2024-12-13 | MAINSPRING ENERGY | WESTFIELD, Hampden, MA | Pass | State |
| 2024-12-13 | MBTA SOUTH BOSTON POWER | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2024-12-13 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2024-12-13 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2024-12-13 | CLEVELAND-CLIFFS STEEL CORPORATION DEARBORN WORKS | DEARBORN, Wayne, MI | Pass | State |
| 2024-12-13 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2024-12-13 | STONECO OF MICHIGAN, INC. | MAYBEE, Monroe, MI | Pass | State |
| 2024-12-13 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2024-12-13 | DOGTOWN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-12-13 | WALKER COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Fail | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Fail | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | DEVON ENERGY PRODUCTION CO LP / RHINO 17 PAD 2 | OKARCHE, Canadian, OK | Pass | State |
| 2024-12-13 | GULFPORT MIDCON LLC / OLIVE 1 33 | ALEX, Grady, OK | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-13 | MILLER & SONS, INC | ONEIDA, Scott, TN | Pass | State |
| 2024-12-13 | ULTIUM CELLS LLC | CITY OF SPRING HILL, Maury, TN | Pass | State |
| 2024-12-13 | DARAB VENTURES ONE, TWO, SIX LLC | ASHBURN, Loudoun, VA | Pass | State |
| 2024-12-13 | ANTERO MIDSTREAM LLC, MOUNTAIN STATION | PENNSBORO, Tyler, WV | Pass | State |
| 2024-12-12 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2024-12-12 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | GEORGIA-PACIFIC WOOD PRODUCTS LLC | GURDON, Clark, AR | Pass | State |
| 2024-12-12 | GEORGIA-PACIFIC WOOD PRODUCTS LLC | GURDON, Clark, AR | Pass | State |
| 2024-12-12 | DESOTO GATHERING COMPANY, LLC. - PUMA CPF-1 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2024-12-12 | DESOTO GATHERING COMPANY, LLC. - PUMA CPF-1 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2024-12-12 | DOMTAR A.W. LLC - ASHDOWN MILL — high-priority violation on file | ASHDOWN, Little River, AR | Pass | State |
| 2024-12-12 | LANXESS CORPORATION-SOUTH PLANT | EL DORADO, Union, AR | Pass | State |
| 2024-12-12 | AERA ENERGY LLC | SAN ARDO, Monterey, CA | Pass | Local |
| 2024-12-12 | AERA ENERGY LLC | SAN ARDO, Monterey, CA | Pass | Local |
| 2024-12-12 | HARBOR COGENERATION CO, LLC | WILMINGTON, Los Angeles, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.